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Line 83... |
unsigned long value;
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unsigned long value;
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asm("l.mfspr\t\t%0,%1,0" : "=r" (value) : "r" (spr));
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asm("l.mfspr\t\t%0,%1,0" : "=r" (value) : "r" (spr));
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return value;
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return value;
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}
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}
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inline void vPortDisableInterrupts( void )
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/*
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* naked attribute is ignored or32-elf-gcc 4.5.1-or32-1.0rc1
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* use assemble routines in portasm.S
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*/
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#if 0
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void vPortDisableInterrupts( void ) __attribute__ ((__naked__))
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{
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{
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asm volatile ( \
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mtspr(SPR_SR, mfspr(SPR_SR) & ~(SPR_SR_TEE|SPR_SR_IEE)); // Tick, interrupt stop
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" @ get current SR \n\t" \
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" l.mfspr r3, r0, SPR_SR \n\t" \
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" l.addi r4, r0, SPR_SR_TEE \n\t" \
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" l.xori r4, r4, 0xffffffff \n\t" \
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" l.and r3, r3, r4 \n\t" \
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" l.addi r4, r0, SPR_SR_IEE \n\t" \
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" l.xori r4, r4, 0xffffffff \n\t" \
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" l.and r3, r3, r4 \n\t" \
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" @ update SR \n\t" \
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" l.mtspr r0, r3, SPR_SR \n\t" \
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);
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}
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}
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void vPortEnableInterrupts( void ) __attribute__ ((__naked__))
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inline void vPortEnableInterrupts( void )
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{
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{
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asm volatile ( \
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mtspr(SPR_SR, mfspr(SPR_SR) | (SPR_SR_TEE|SPR_SR_IEE)); // Tick, interrupt start
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" @ get current SR \n\t" \
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" l.mfspr r3, r0, SPR_SR \n\t" \
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" @ enable Tick Timer Interrupt \n\t" \
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" l.ori r3, r3, SPR_SR_TEE \n\t" \
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" @ enable External Interrupt \n\t" \
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" l.ori r3, r3, SPR_SR_IEE \n\t" \
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" @ update SR \n\t" \
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" l.mtspr r0, r3, SPR_SR \n\t" \
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);
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}
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}
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#endif
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|
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/*
|
/*
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* Initialise the stack of a task to look exactly as if a call to
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* Initialise the stack of a task to look exactly as if a call to
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* portSAVE_CONTEXT had been called.
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* portSAVE_CONTEXT had been called.
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*
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*
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* See header file for description.
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* See header file for description.
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*/
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*/
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portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
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portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
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{
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{
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unsigned portLONG uTaskSR = mfspr(SPR_ESR_BASE);
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unsigned portLONG uTaskSR = mfspr(SPR_SR);
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uTaskSR &= ~SPR_SR_SM; // User mode
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uTaskSR |= SPR_SR_SM; // Supervisor mode
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uTaskSR |= (SPR_SR_TEE | SPR_SR_IEE); // Tick interrupt enable, All External interupt enable
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uTaskSR |= (SPR_SR_TEE | SPR_SR_IEE); // Tick interrupt enable, All External interupt enable
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|
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/* Setup the initial stack of the task. The stack is set exactly as
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/* Setup the initial stack of the task. The stack is set exactly as
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expected by the portRESTORE_CONTEXT() macro. */
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expected by the portRESTORE_CONTEXT() macro. */
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*(--pxTopOfStack) = (portSTACK_TYPE)pxCode; // SPR_EPCR_BASE(0)
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*(--pxTopOfStack) = (portSTACK_TYPE)pxCode; // SPR_EPCR_BASE(0)
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